Date Published: August 01, 2012
Publisher: International Union of Crystallography
Author(s): Jinpeng Zhang, Yinan Wang, Qian Wang, Lichun Xu.
In the title compound, C15H8Cl4N2O, the quinoxaline ring system is almost planar, with a dihedral angle between the benzene and pyrazine rings of 3.1 (2)°. The 2,4-dichlorophenyl ring is approximately perpendicular to the pyrazine ring, with a dihedral angle of 86.47 (13)° between them. The crystal packing features intermolecular N—H⋯O hydrogen bonds and π–π stacking interactions, with centroid–centroid distances in the range 3.699 (3)–4.054 (3) Å.
For the bioactivity of quinoxalin-2(1H)-one derivatives, see: Mensah-Osman et al. (2002 ▶); Perez et al. (2002 ▶); Quint et al. (2002 ▶); Seitz et al. (2002 ▶).